1 /**
2 * @file oprofile_stats.c
3 *
4 * @remark Copyright 2002 OProfile authors
5 * @remark Read the file COPYING
6 *
7 * @author John Levon
8 */
9
10 #include <linux/oprofile.h>
11 #include <linux/smp.h>
12 #include <linux/cpumask.h>
13 #include <linux/threads.h>
14
15 #include "oprofile_stats.h"
16 #include "cpu_buffer.h"
17
18 struct oprofile_stat_struct oprofile_stats;
19
20 void oprofile_reset_stats(void)
21 {
22 struct oprofile_cpu_buffer *cpu_buf;
23 int i;
24
25 for_each_possible_cpu(i) {
26 cpu_buf = &per_cpu(cpu_buffer, i);
27 cpu_buf->sample_received = 0;
28 cpu_buf->sample_lost_overflow = 0;
29 cpu_buf->backtrace_aborted = 0;
30 cpu_buf->sample_invalid_eip = 0;
31 }
32
33 atomic_set(&oprofile_stats.sample_lost_no_mm, 0);
34 atomic_set(&oprofile_stats.sample_lost_no_mapping, 0);
35 atomic_set(&oprofile_stats.event_lost_overflow, 0);
36 atomic_set(&oprofile_stats.bt_lost_no_mapping, 0);
37 }
38
39
40 void oprofile_create_stats_files(struct super_block *sb, struct dentry *root)
41 {
42 struct oprofile_cpu_buffer *cpu_buf;
43 struct dentry *cpudir;
44 struct dentry *dir;
45 char buf[10];
46 int i;
47
48 dir = oprofilefs_mkdir(sb, root, "stats");
49 if (!dir)
50 return;
51
52 for_each_possible_cpu(i) {
53 cpu_buf = &per_cpu(cpu_buffer, i);
54 snprintf(buf, 10, "cpu%d", i);
55 cpudir = oprofilefs_mkdir(sb, dir, buf);
56
57 /* Strictly speaking access to these ulongs is racy,
58 * but we can't simply lock them, and they are
59 * informational only.
60 */
61 oprofilefs_create_ro_ulong(sb, cpudir, "sample_received",
62 &cpu_buf->sample_received);
63 oprofilefs_create_ro_ulong(sb, cpudir, "sample_lost_overflow",
64 &cpu_buf->sample_lost_overflow);
65 oprofilefs_create_ro_ulong(sb, cpudir, "backtrace_aborted",
66 &cpu_buf->backtrace_aborted);
67 oprofilefs_create_ro_ulong(sb, cpudir, "sample_invalid_eip",
68 &cpu_buf->sample_invalid_eip);
69 }
70
71 oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mm",
72 &oprofile_stats.sample_lost_no_mm);
73 oprofilefs_create_ro_atomic(sb, dir, "sample_lost_no_mapping",
74 &oprofile_stats.sample_lost_no_mapping);
75 oprofilefs_create_ro_atomic(sb, dir, "event_lost_overflow",
76 &oprofile_stats.event_lost_overflow);
77 oprofilefs_create_ro_atomic(sb, dir, "bt_lost_no_mapping",
78 &oprofile_stats.bt_lost_no_mapping);
79 }
80
|
This page was automatically generated by the
LXR engine.
|